Doctors help regenerate bone and skin tissue
These seven runners aren't ordinary athletes. They are Ukrainian heroes injured during combat in eastern Ukraine.
Despite sustaining wounds that usually lead to an amputation, they are now able to take part in the annual veterans run - all thanks to a newly-developed treatment.
It is called biotechnology. For now, nearly 150 people are on the waiting list to be treated by doctors specializing in growing new bones.
Dr. Volodymyr Oksymets, traumatologist:"They will run the way they feel. Because the most important part for me is the fact that they are walking. That they are using their limbs. The rest their body will decide for itself".
They all started running together but some are faster than others. Oleksandr had more difficulty since his heel was just recently regenerated.
Oleksandr Pidkopany, Ukrainian veteran: "It was really scary to take the first steps. The doctor told me to get up, and I said - I'm scared. He insisted - and I understood that it won't break because it's alive and I can actually feel my heel."
Although the veterans ended up walking across the finish line - they say a chance to walk again is a victory in itself.